Find all zeroes of the function. Enter the real zeroes separated by commas.

f(x)

=(x-4)[6(x^2)+23x+20]

=(x-4)(2x+5)(3x+4)

x=4,-2/5,-3/4

the first one, all those points on the line just make a strait line.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.